Window-screen



(No Model.)

W. H. THOMAS.

WINDOW SCREEN.

No. 416,083. Patented Nov. 26, 1889.

WITNEEEEE:

1 l f rf MWMWL.

UNITED STATES PATENT OFFICE.

IVILLIAM Il. THOMAS, OF JENKINTOIVN, PENNSYLVANIA.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 416,083, dated November26, 1889. l Application filed May 3, 1889. Serial No. 309,527. (Nomodel.)

To all wil/om, it may concern:

Be it known that l, VILLIAM H. THOMAS, a citizen of the United States,residing' at Jenkintown, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvements inIVindOw- Screens; and I do hereby declare that the following is a full,clear, and exact description of the invention.

My invention has relation to windowscreens, and has for its object toprovide simple and efficient means for securing the same in place in thewindow-frames and permitting of their ready removal therefrom.

My invention consists in the provision of a bolt secured in a suitablerecess in each corner of the side of a window-screen, the casing of saidbolt being L-shaped in transverse section and secured to said frame atsaid corners. Instead, however, of the bolt being actuated by a springand normally projecting beyond the edge of the screen-frame and outside.of its casing, as heretofore, the same, when the screen is not in use,normally rests entirely within its casing and with equal facility restsat its extreme outside position. In fact, myimproved bolt will rest justwhere it may be found desirable to place it. This result I accomplishthrough the use of a flat spring secured at one end to the inside of thebolt-casing and at its other end resting on the side or top of the bolt,thus controlling the movements of the bolt and not in any wiseassisting` in its actuation. Thus, it will be readily seen, the dangerof damage to the bolt by bending or otherwise when the screens are notin use and the bolts project beyond the casing is perfectly avoided.Vhen my improved bolts are once withdrawn, the flat springs preventtheir accidental movement into their projecting positions. ln addition,the L-shaped bolt-casings serve to brace the screen-frame at the corners where the recesses are formed.

All the details of my invention will be more particularly describedhereinafter, and will be clearly understood upon referring to the'accompanying drawings, wherein- Figure l is an elevation of awindow-screen in-position with my improvements applied thereto. Fig. 2is an edge view of the same with the window-frame in section. Figs. 3and t are enlarged side elevations and plan views of my improvements.Fig. 5 is a perspective of a corner of the screen-frame, showing therecess therein.

A represents the screen secured to the stiles b b h2 b3 of thescreen-frame B in the usual manner, which frame slides on the tongues cc', secured to the window-frame C. Instead, however, of providing saidframe B with a groove in each side, there is provided but one groove c2in' the stile b3, While on the other side there is provided a singlelongitudinal strip c3 on the stile 1)',Which is iiush with the surfaceof said stile and is similar to one of the walls of the groove c2. Inlieu of the other wall,ithere is provided a pair of square lbolts D D,which occupy the position of said discarded wall and are placed at eachend of the stile o', thus preventing any movement of the ends of theframe, and said bolts at the same time are of such thickness as to closeup the space between the tongue c and the windowsash C', thus preventingthe entrance of insects to the compartment through such space. Saidbolts slide in recesses c, extending longi tudinally of the Stiles h b2from their junction with the stile b, which recesses do not, however,eXtend to the surfaces of said stiles, but terminate a short distancetherefrom, allowing for the formation of the shallow recesses c2 e3 c4parallelwith the walls of recesses e, for the reception of the side,top, and end plates ff f2 of4 the bolt-casings F F which are securedtherein by the screws g g. The outer ends d of said bolts pass throughcorrespondingly-squared openings f3 in the end plates, which openingsare very close to the edge of the side plates f, so as to bring saidends close to the window-sash and at the same time contact with thetongue c,'for the purpose above suggested. The inner ends d of saidbolts are considerably wider than the outer ends CZ, having thelongitudinal enlargements or swells d2 thereon, near the edge of which,in an opening formed therein, are secured the shanks 7L of thethumb-pieces II, which thumb-pieces are so disposed as to slide withinlongitudinal slots h2 in the centrallylocated concavities h', formed inthe top plates f of the casings F F', and maintain the bolts IOO in theproper positions in the casings, said concavities or recesses being ofsuch dept-h that the thumb-pieces II will not project beyond thesurfaces of the top plates. The sides of the inner ends d of the bolts DD opposite the swell d2 are in a line with the edges of the ends d ofthe said bolts, which edges bear against the inside of the side platesf, thus bringing the outer ends of the bolts close to the outer surfacesof the bolt-casings.

As shown in the drawings, when the boltcasings are in place the wallsthereof are flush with the surfaces of the screen-frame, and, owing tothe shape of the bolt-casings, being substantially like an elongated Lwith the end closed, the frame at its corners will be perfectly braced,thus conducing to an increased length of time of usefulness thereof. Itwill also be readily seen that the recesses for the bolts and theircasings can be quickly formed by the use of an ordinary chisel, thuscheapening the construction of the screen and at the same time greatlyenhancing its value and utility. The insides of the top plates f havesecured thereto, by a screw t or otherwise, aflat spring I, curved atits free end, so as to bear against and exert a pressure on the topsurfaces of the outer ends d of the bolts D D, thus preventing theiraccidental movement and causing said bolts to remain in any adjustedposition, and insuring Vtheir remaining in contact with their tongues,and yet not interfering with the Withdrawal of the same into theirincased positions, where they will remain until manually removedtherefrom.

Besides the bolts coming close to the window-sash said bolts areslightly Withinv the line of the face of the screen-frame. Consequentlythe latter will come into closer rela'- tion with the Window-sash thando the bolts.

As hereinbefore intimated, I am aware that opening-actuated bolts haveheretofore been employed With screen frames, and that screens haveheretofore been secured at each end of one side in the window-frame, sothat I do not wish to be understood as claiming the same, broadly; but

What I claim as my invention is l. In a screen-frame, the combination ofthe bolt D, the bolt-casing F, a screen-frame y with a recess in eachcorner of one of its sides for the reception of the bolt, a iiat springsecured to the inside of the casing and pressing on the side of thebolt, and the casin g secured to the screen-frame at said corner,substantially as and for thepurpose set forth.

2. In a window-screen, the combination of the frame B, having the stilesb b2, )rovided with the recesses e and the recesses e2 e3 e4, the boltsD and the casings, F F in said recesses, the screws g g, the flatsprings I, pressing on said bolts, and the screws t', securing saidsprings to the insides of said casings, substantially as and for thepurpose set forth.

3. In a window-screen, the combination of the frame B, having the stilesb b2, provided with the recesses e and the recesses e2 e3 e4, the boltsD and the casings F F in said recesses, the plate f, the depression h insaid plate, the slot h2 in said depression, the thumbpieces H, theshanks 72, of said thumb-pieces passing through said slots and into theends d of said bolts, the plates f2, the openings f3 in said plates forthe passage of the ends d of said bolts, the plates f, the screws g g',the flat springs I, the screws z', securing said springs to the insidesof the plates f', substantially as and for the purpose set forth.

4. In a window-screen, the combination, with the Window-frame C,provided with the tongues c c, of the frame B, having the stile b3, withthe groove c2 therein, the stile b', with the strip c3 thereon, and thestiles b b2, provided with the recesses e and the recesses c2 e3 e, thebolts D and' the casings F F in said recesses, the screws g g', thethumb-pieces II, with their shanks passing through said casings and intosaid' bolts, the springs I, and the screws t', securing said springsinside of the casings, substantially as and for the purpose set forth.

I'n testimony whereof .I have hereunto set my hand, at Philadelphia,Pennsylvania', this 22d day of April, A. D. 1889.

VILLIAM H. THOMAS.

IVitnesses:

WILL H. POWELL, R. DALE SPARHAWK.

